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+#!/usr/bin/env perl
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+
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+# WARNING: do not edit!
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+# Generated by makefile from ..\tools\c_rehash.in
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+# Copyright 1999-2018 The OpenSSL Project Authors. All Rights Reserved.
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+#
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+# Licensed under the OpenSSL license (the "License"). You may not use
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+# this file except in compliance with the License. You can obtain a copy
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+# in the file LICENSE in the source distribution or at
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+# https://www.openssl.org/source/license.html
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+
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+# Perl c_rehash script, scan all files in a directory
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+# and add symbolic links to their hash values.
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+
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+my $dir = "";
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+my $prefix = "";
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+
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+my $errorcount = 0;
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+my $openssl = $ENV{OPENSSL} || "openssl";
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+my $pwd;
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+my $x509hash = "-subject_hash";
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+my $crlhash = "-hash";
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+my $verbose = 0;
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+my $symlink_exists=eval {symlink("",""); 1};
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+my $removelinks = 1;
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+
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+## Parse flags.
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+while ( $ARGV[0] =~ /^-/ ) {
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+ my $flag = shift @ARGV;
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+ last if ( $flag eq '--');
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+ if ( $flag eq '-old') {
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+ $x509hash = "-subject_hash_old";
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+ $crlhash = "-hash_old";
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+ } elsif ( $flag eq '-h' || $flag eq '-help' ) {
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+ help();
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+ } elsif ( $flag eq '-n' ) {
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+ $removelinks = 0;
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+ } elsif ( $flag eq '-v' ) {
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+ $verbose++;
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+ }
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+ else {
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+ print STDERR "Usage error; try -h.\n";
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+ exit 1;
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+ }
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+}
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+
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+sub help {
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+ print "Usage: c_rehash [-old] [-h] [-help] [-v] [dirs...]\n";
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+ print " -old use old-style digest\n";
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+ print " -h or -help print this help text\n";
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+ print " -v print files removed and linked\n";
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+ exit 0;
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+}
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+
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+eval "require Cwd";
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+if (defined(&Cwd::getcwd)) {
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+ $pwd=Cwd::getcwd();
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+} else {
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+ $pwd=`pwd`;
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+ chomp($pwd);
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+}
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+
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+# DOS/Win32 or Unix delimiter? Prefix our installdir, then search.
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+my $path_delim = ($pwd =~ /^[a-z]\:/i) ? ';' : ':';
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+$ENV{PATH} = "$prefix/bin" . ($ENV{PATH} ? $path_delim . $ENV{PATH} : "");
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+
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+if (! -x $openssl) {
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+ my $found = 0;
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+ foreach (split /$path_delim/, $ENV{PATH}) {
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+ if (-x "$_/$openssl") {
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+ $found = 1;
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+ $openssl = "$_/$openssl";
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+ last;
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+ }
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+ }
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+ if ($found == 0) {
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+ print STDERR "c_rehash: rehashing skipped ('openssl' program not available)\n";
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+ exit 0;
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+ }
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+}
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+
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+if (@ARGV) {
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+ @dirlist = @ARGV;
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+} elsif ($ENV{SSL_CERT_DIR}) {
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+ @dirlist = split /$path_delim/, $ENV{SSL_CERT_DIR};
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+} else {
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+ $dirlist[0] = "$dir/certs";
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+}
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+
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+if (-d $dirlist[0]) {
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+ chdir $dirlist[0];
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+ $openssl="$pwd/$openssl" if (!-x $openssl);
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+ chdir $pwd;
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+}
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+
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+foreach (@dirlist) {
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+ if (-d $_ ) {
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+ if ( -w $_) {
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+ hash_dir($_);
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+ } else {
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+ print "Skipping $_, can't write\n";
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+ $errorcount++;
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+ }
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+ }
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+}
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+exit($errorcount);
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+
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+sub hash_dir {
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+ my %hashlist;
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+ print "Doing $_[0]\n";
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+ chdir $_[0];
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+ opendir(DIR, ".");
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+ my @flist = sort readdir(DIR);
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+ closedir DIR;
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+ if ( $removelinks ) {
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+ # Delete any existing symbolic links
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+ foreach (grep {/^[\da-f]+\.r{0,1}\d+$/} @flist) {
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+ if (-l $_) {
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+ print "unlink $_" if $verbose;
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+ unlink $_ || warn "Can't unlink $_, $!\n";
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+ }
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+ }
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+ }
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+ FILE: foreach $fname (grep {/\.(pem)|(crt)|(cer)|(crl)$/} @flist) {
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+ # Check to see if certificates and/or CRLs present.
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+ my ($cert, $crl) = check_file($fname);
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+ if (!$cert && !$crl) {
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+ print STDERR "WARNING: $fname does not contain a certificate or CRL: skipping\n";
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+ next;
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+ }
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+ link_hash_cert($fname) if ($cert);
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+ link_hash_crl($fname) if ($crl);
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+ }
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+}
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+
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+sub check_file {
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+ my ($is_cert, $is_crl) = (0,0);
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+ my $fname = $_[0];
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+ open IN, $fname;
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+ while(<IN>) {
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+ if (/^-----BEGIN (.*)-----/) {
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+ my $hdr = $1;
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+ if ($hdr =~ /^(X509 |TRUSTED |)CERTIFICATE$/) {
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+ $is_cert = 1;
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+ last if ($is_crl);
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+ } elsif ($hdr eq "X509 CRL") {
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+ $is_crl = 1;
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+ last if ($is_cert);
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+ }
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+ }
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+ }
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+ close IN;
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+ return ($is_cert, $is_crl);
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+}
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+
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+
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+# Link a certificate to its subject name hash value, each hash is of
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+# the form <hash>.<n> where n is an integer. If the hash value already exists
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+# then we need to up the value of n, unless its a duplicate in which
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+# case we skip the link. We check for duplicates by comparing the
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+# certificate fingerprints
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+
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+sub link_hash_cert {
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+ my $fname = $_[0];
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+ $fname =~ s/'/'\\''/g;
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+ my ($hash, $fprint) = `"$openssl" x509 $x509hash -fingerprint -noout -in "$fname"`;
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+ chomp $hash;
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+ chomp $fprint;
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+ $fprint =~ s/^.*=//;
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+ $fprint =~ tr/://d;
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+ my $suffix = 0;
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+ # Search for an unused hash filename
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+ while(exists $hashlist{"$hash.$suffix"}) {
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+ # Hash matches: if fingerprint matches its a duplicate cert
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+ if ($hashlist{"$hash.$suffix"} eq $fprint) {
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+ print STDERR "WARNING: Skipping duplicate certificate $fname\n";
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+ return;
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+ }
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+ $suffix++;
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+ }
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+ $hash .= ".$suffix";
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+ if ($symlink_exists) {
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+ print "link $fname -> $hash\n" if $verbose;
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+ symlink $fname, $hash || warn "Can't symlink, $!";
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+ } else {
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+ print "copy $fname -> $hash\n" if $verbose;
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+ if (open($in, "<", $fname)) {
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+ if (open($out,">", $hash)) {
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+ print $out $_ while (<$in>);
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+ close $out;
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+ } else {
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+ warn "can't open $hash for write, $!";
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+ }
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+ close $in;
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+ } else {
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+ warn "can't open $fname for read, $!";
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+ }
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+ }
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+ $hashlist{$hash} = $fprint;
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+}
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+
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+# Same as above except for a CRL. CRL links are of the form <hash>.r<n>
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+
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+sub link_hash_crl {
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+ my $fname = $_[0];
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+ $fname =~ s/'/'\\''/g;
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+ my ($hash, $fprint) = `"$openssl" crl $crlhash -fingerprint -noout -in '$fname'`;
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+ chomp $hash;
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+ chomp $fprint;
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+ $fprint =~ s/^.*=//;
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+ $fprint =~ tr/://d;
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+ my $suffix = 0;
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+ # Search for an unused hash filename
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+ while(exists $hashlist{"$hash.r$suffix"}) {
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+ # Hash matches: if fingerprint matches its a duplicate cert
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+ if ($hashlist{"$hash.r$suffix"} eq $fprint) {
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+ print STDERR "WARNING: Skipping duplicate CRL $fname\n";
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+ return;
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+ }
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+ $suffix++;
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+ }
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+ $hash .= ".r$suffix";
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+ if ($symlink_exists) {
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+ print "link $fname -> $hash\n" if $verbose;
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+ symlink $fname, $hash || warn "Can't symlink, $!";
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+ } else {
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+ print "cp $fname -> $hash\n" if $verbose;
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+ system ("cp", $fname, $hash);
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+ warn "Can't copy, $!" if ($? >> 8) != 0;
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+ }
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+ $hashlist{$hash} = $fprint;
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+}
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